CdSeO3
cadmium selenite
Cadmium selenite is a stable, wide-band-gap inorganic oxide used primarily as a research material for studying complex electronic and structural properties.
About cadmium selenite
Cadmium selenite is a thermodynamically stable compound that occupies a distinct position within the family of wide-band-gap oxides. Its electronic character as an insulator makes it a subject of significant interest for fundamental materials science studies, particularly where structural stability is a primary design requirement.
Researchers analyze this material to better understand the behavior of complex oxide systems. Given its documented structural diversity across multiple databases, it serves as a valuable reference point for investigating the interplay between composition and electronic properties in transparent conducting oxide frameworks.
Key Properties
Cross-validated computational properties for cadmium selenite, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CdSeO3. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for CdSeO3, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| — | — | 3.89 | 0.0000 | -1.245 | — |
| Pnma (No. 62) | orthorhombic | 3.28 | 0.0000 | -1.085 | — |
| Pnma (No. 62) | orthorhombic | 3.09 | 0.0000 | -5.274 | 5.81 |
| P21/c (No. 14) | monoclinic | 3.40 | 0.0055 | -5.269 | 5.03 |
| — | — | 3.35 | 0.0066 | -1.239 | — |
| P21/c (No. 14) | monoclinic | 3.69 | 0.0309 | -1.054 | — |
| — | — | 2.67 | 0.0761 | -1.169 | — |
| — | — | 0.00 | 0.4804 | -0.765 | — |
| — | — | 0.00 | 1.3545 | 0.109 | — |
| — | — | 0.00 | 1.5877 | 0.343 | — |
| P21/c (No. 14) | monoclinic | — | — | — | 5.16 |
| Pnma (No. 62) | orthorhombic | — | — | — | 5.92 |
Applications
Where cadmium selenite is used.
Frequently Asked Questions
Common questions about cadmium selenite, answered from cross-validated data.
What is CdSeO3?
Cadmium selenite is a stable, wide-band-gap inorganic oxide used primarily as a research material for studying complex electronic and structural properties.
What is CdSeO3 used for?
What is the band gap of CdSeO3?
Is CdSeO3 a metal, semiconductor, or insulator?
Is CdSeO3 thermodynamically stable?
What is the crystal structure of CdSeO3?
What is the density of CdSeO3?
How many polymorphs of CdSeO3 are known?
What elements does CdSeO3 contain?
Where does the data for CdSeO3 come from?
How It Compares
Within the transparent conducting oxides class.
While materials like ZnO and BaSnO3 are widely recognized for their role as functional transparent conductors, CdSeO3 is categorized by its insulating electronic nature. Unlike the spinel-structured ZnGa2O4 or Zn2SiO4, this compound offers a different structural landscape, providing a unique comparative benchmark for researchers studying the transition from insulating to conductive behavior within the broader oxide class.
Related Compounds
Other Transparent Conducting Oxides in the database.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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